While Santa's Workshop hustles to build trains for good girls and boys, Cody's Workshop stays busy enhancing freight cars with etched-metal parts! Host Cody Grivno shows how he replaced his covered hopper's plastic roof walkway with a see-through metal component from Plano Model Products. Cody also shares a couple of new and handy tools. Plus, he answers your questions and comments, including one that takes him to an MR&T layout room display case that includes many intriguing artifacts.